000
AGXX40 KNHC 191731
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
130 PM EDT THU APR 19 2007

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA
AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W.

UPPER LEVELS...
LONGWAVE TROUGH OVER THE EASTERN GULF OF MEXICO...FLORIDA AND 
THE ATLANTIC AREA IS EAST OF 85W. RIDGE IS OVER THE REMAINDER OF 
THE GULF WEST OF 85W.  BOTH FEATURES WILL AMPLIFY IN THE NEXT 36 
HOURS AND MOVE SLIGHTLY EAST WITH THE TROUGH EAST OF 80W AND 
RIDGE W OF 80W.  THE FEATURES WILL THEN WEAKEN SOME AND BECOME 
TILTED AND BY SUNDAY THE TROUGH AXIS WILL BE ALONG LINE FROM 
BERMUDA TO WEAKEN OVER WEST CUBA. THE RIDGE WILL EXTEND FROM 
NEAR 35N87W TO THE WESTERN BAY OF CAMPECHE SUNDAY. THIS WILL 
CONTINUE THROUGH TUESDAY WITH THE RIDGE AXIS ALONG A LINE FROM 
35N65W TO ACROSS SOUTH FLORIDA TO A LARGE ANTICYCLONE CENTERED 
OVER THE SOUTHWESTERN GULF OF MEXICO AND EASTERN MEXICO AND THE 
TROUGH AXIS THROUGH 31N57W TO HISPANIOLA.

SURFACE...
WEAK LOW MOVING EAST ACROSS THE NORTHERN PART OF THE ATLANTIC 
AREA WILL DEVELOP AS IT REACHES THE MAIN AXIS OF THE UPPER 
TROUGH WITH THE ASSOCIATED WINDS ESSENTIALLY EAST OF 65W. THIS 
FEATURE WILL CONTINUE EAST FRIDAY.  THE REMAINDER OF THE AREA 
AND FOR THE REMAINDER OF THE FORECAST PERIODS THE WINDS WILL BE 
DOMINATED BY HIGH PRESSURE DEVELOPING OVER THE SOUTHEAST U.S. 
THROUGH SATURDAY THEN BUILDING EAST-WEST JUST NORTH OF THE AREA 
SUNDAY THROUGH TUESDAY.  

WINDS IN THE CARIBBEAN AND TROPICAL ATLANTIC WILL BE LESS THAN 
NORMAL THROUGH SUNDAY WITH MORE NORMAL TRADES RETURNING MONDAY 
AND TUESDAY AS THE RIDGE BUILDS NORTH OF THE AREA.
 
WARNINGS...
ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL